Intake-manifold for internal-combustion engines.



H. s. MOUNTFORD. INTAKE MANIFOLD FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED DEG.28, 1912.

. ggg l 5 Patented June 2, 1914;

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H. S. MOUNTFORD.

INTAKE MANIFOLD FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED DEC. 28, 1912. 1 98, 1 5, Patented June 2,1914

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a fl m M UNITED STATES PATENT OF nowenns. mounrronn, or ALGonA, Iowa.

useum-row FOR m'rnmv'ancomnusrxon enemas.

mof a simple-and eflicient means 'for heating I the intake for anexplosive engine n such a manner as to cause an efiicient combustionwithin the explosive cylinder.

Another object of this invention isthe production of a simple andeflicient intake j invention consists of certain novel construcmanifoldcasting wherein the exhaust. ases from the engine may be passed arounthe ,intake pipe in such a manner as to heat the intake gas to asuflicient temperature to cause an efficient-explosion within thecylinder of the engine.

With these and other objects in view, this i tions, combinations andarrangements of parts, as will be hereinafter fully described and'cla'imed.

' In the accompanying drawings :--Figure 1 is a side elevationof aseries of cylinders showing the intake manifold casting applied thereto.Fig. 2 is a view ofthe intake manifold casting from the opposite sideto,that as illustrated in .Fig. 1. Fig. 3 is at end view of theintake'inanifold casting. Fig. 4 is a central sectional view of the intake manifold casting taken on line 4- 1: of

Fig; 1, looking in the direction. of the arrow... i

' By referring to the drawings, it will be seen that 1 designates theengine which is F to provided with the usual exhaust manifold casting 2and the usual ,carbureter. 3 is connected to the cylinders of the engineby means of the intake manifold casting l. This intake manifold castingt-comprises a lower 13eCk'P01t101'1. 5 -\7Yh Ch connects directly to thecarburetor? and the casing is also provided with a pair of outletopenings or passageways 6 which connect directly with thecylinders ofthe engine. The casting 1 comprises a centrally located intakepassageway 7 formed therein, and this passageway 7 is so formed as toextend 'centrally of the com Specification of Letters Patent.

a substantially V-shaped body having Patented June 2., 1914.

Application filed December 28, 1912. Serial No. 739,104.

partment 8formed by the outer casing 9 of the casting 4. The intake orsupply pipe 7 isformed within the casting 4 so as to constitute asubstantially T-shaped structure having laterally extending ends 10, asillustrated in dotted lines in Fig. 1 communi eating with the dischargepassageways 6 which supply the combustion or heated gases to thecylinders. It will be seen by carefully considering Figs. 1 and 4 that apocket supply pipe 12 is directly connected to one ofthe compartments orpockets 11 by means of'an angle pipe 13. This exhaust supply pipe 12 isconnected to the exhaust manifold 2 by means bf a coupling 14 and avalve 15 11 is formed upon eachside. of-the intake passageway or supplypipe 7 and an exhaust is carried'by the pipe 12 so as to control 'thesupply of exhaust from the exhaust manifold casing 2 to the intakemanifold casing 4. An exhaust discharge pipe 16 is connected to theopposite pocket 11 by means of the angle connection 17 as clearly.illustrated in Figs. 1 and 4:, and this exhaust discharge pipe 16allows the exhaust, 'after hav ingpassed through the intake manifoldcasing, tobe discharged therefrom.

From the foregoing description, it will be seen that a very simple'andefiici'ent device has been produced whereby the exhaustfrom anengine ofthe explosive character maybe ut-ilizedfor the purpose of heating theintake gases as the samepass through the intake manifold casting. Itwill also be seen that in view of the fact that the intake manifoldcasing 1 is provided with an inte-.

grally formed pipe within the body so as to produce pockets upon eachside and also I a passageway for the heated gases to pass around theintake pipe, a' very eilieient means has been produced for heating theintake gases in view of the fact that the maximum amount of heatingsurface. is placed within the intake manifold casting 4. The valve 15 isoperated by means 'of the handlelS soas to cut oif the supply of exhaustfrom the exhaust manifold'casing 2..

From the foregoing description, it will be seen that owing to theconstruction of, the

,present device the operator will be enabled to use a lower gravity fuelthan is ordinarily used by reason of the more efiicient combustionexplosion which is obtained thereby.

Having thus described the invention, what 'isclaimed as new, is

'1. In. a device of the class describedthe combination with an explosiveengine,,an

exhaust manifold casting and an intake --m anifold casing, said intakemanifold castingi provided with a substantially V-shaped b0 y having areduced neck at its inlet end, said intake manifold; castingalso'provided -with an integrally formed, centrally arrangedintake'supply pipe having a flaring outlet end that terminatesinlaterally extending ends, said casting provided with discharge openingsfor connecting with an explosive engine whereby fuel may be supplied tosaid explosive engine, said intake manifold casting provided with acompartment extending around said intake supply= pipev formed-withinsaid casting, and means con-.

provided with a reduced inlet end, said intake manifold casting providedwith an integral comparatively narrow supply pipe formed therein that'flares outwardly from its inlet and terminates in laterally extendingends,

said intake manifold casting provided with discharge openings in saidlaterally extending ends, said casting provided with a'com- I partmentthat surrounds said supply pipe,

-a pipe connecting said exhaust manifold casting with'said compartmentfor supplying heated gases from said exhaust manito d casting 1nto saidintake manifold cast 7 ing, valve means for controlling the passage ofheated gases through said pipe, and an exhaust pipe connected to saidcompartment for discharging heated gases therefrom.

In testimony whereof I hereunto aflix my signature in presence of twowitnesses.

HOWARD s. MOUNTFORD.

Witnesses LAURA SOHULZE J. SULLIVAN,

